Inventories (Tables)
 9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories as of September 30, 2016 and December 31, 2015 consist of the following (in thousands):

 

     September 30,
2016		      December 31,
2015		  

Finished goods

    $ 16,139         18,427   

Semi-finished goods and work-in-process

      55,744         47,131   

Raw materials

      6,821         5,987   

Materials in-transit

      1,842         2,107   

Less: inventory reserve

      (8,490 )       (16,033 ) 
  

 

 

     

 

 

  

Inventories, net

    $ 72,056       $ 57,619   
  

 

 

     

 

 

  
Changes in Inventory Reserve
     Three Months
Ended		      Nine Months
Ended		      Three Months
Ended		     Nine Months
Ended		  
     September 30, 2016      September 30, 2015  

Beginning balance

    $ (14,997 )     $ (16,033 )     $ (31,361 )    $ (47,488 ) 

Change in reserve

      1,566         319         3,863        (1,780 ) 

Write off

      5,710         7,850         4,050        25,010   

Translation adjustments

      (769 )       (626 )       1,808        2,618   
  

 

 

     

 

 

     

 

 

    

 

 

  

Ending balance

    $ (8,490 )     $ (8,490 )     $ (21,640 )    $ (21,640 )